JP2020010543A - Cooling equipment, on-vehicle cooling device and cooling system - Google Patents

Abstract

To provide cooling equipment, an on-vehicle cooling device and a cooling system capable of enhancing safety when cooling a battery mounted on a vehicle.SOLUTION: Cooling equipment includes: an equipment cooling system 71 for cooling a battery cell 11 mounted on a vehicle; and a controller 75 for performing operation control of the equipment cooling system 71. The equipment cooling system 71 includes: a refrigeration equipment circuit 72 for circulating a refrigerant of a refrigeration cycle; and a water cooling equipment circuit 73 for circulating cooling water. On vehicle 60, an on-vehicle connector 65 is mounted comprising by including a vehicular outside chiller 46 used for cooling the battery cell 11. The cooling equipment 70 has an equipment connector 100 comprising by including a chiller cooling part 93 of the water cooling equipment circuit 73. These on-vehicle connector 65 and the facility connector 100 can be connected with each other, and in a state of being connected with each other, the chiller cooling part 93 cools the vehicular outside chiller 46 by heat exchange with the vehicular outside chiller 46.SELECTED DRAWING: Figure 1

Description

  The disclosure in this specification relates to a cooling facility, a vehicle-mounted cooling device, and a cooling system.

  As a cooling facility for cooling a vehicle-mounted battery when charging the vehicle, Patent Literature 1 discloses a cooling facility that supplies a coolant for cooling the battery to the inside of the vehicle. This cooling facility has a coolant supply plug for supplying the coolant to the vehicle, and the coolant supply plug is attached to the vehicle-introduced coolant introduction portion to supply the coolant from the cooling facility to the inside of the vehicle. Is done.

JP-A-2017-4677

  However, in the configuration of Patent Literature 1, it is conceivable that the refrigerant leaks to the outside when the refrigerant supply plug is attached to the refrigerant introduction part mounted on the vehicle. If the refrigerant leaks to the outside, there is a concern that the safety of the battery may be reduced when the battery is cooled by the cooling equipment due to the flammability of the refrigerant.

  A main object of the present disclosure is to provide a cooling facility, a vehicle-mounted cooling device, and a cooling system that can enhance safety when cooling a battery mounted on a vehicle.

  The embodiments disclosed in this specification employ different technical means from each other in order to achieve the respective objects. Further, the reference numerals in the claims and the parentheses described in this section are examples showing the correspondence with specific means described in the embodiment described below as one aspect, and limit the technical scope. is not.

A first aspect disclosed is:
A cooling system (70) for cooling a battery via a vehicle-mounted heat exchange unit for a vehicle (60) equipped with a battery (11) and a vehicle-mounted heat exchange unit (46, 121) for cooling the battery,
An equipment connector (100) that has an on-vehicle heat exchange unit and is detachably connected to an on-vehicle connector (65) mounted on the vehicle;
The equipment connector
A cooling facility having a facility heat exchange section (93) for cooling the onboard heat exchange section by heat exchange with the onboard heat exchange section in a state where the facility connector and the onboard connector are connected to each other.

  According to the first aspect, when the user connects the equipment connector of the cooling equipment to the vehicle-mounted connector, the vehicle-mounted heat exchange part is cooled by heat exchange between the equipment heat exchange part of the equipment connector and the vehicle-mounted heat exchange part of the vehicle-mounted connector. Then, the battery of the vehicle is cooled. In this configuration, since heat exchange is performed without moving a fluid such as a refrigerant between the equipment heat exchange unit and the on-vehicle heat exchange unit, there is no need to move the fluid between the cooling equipment and the vehicle. Therefore, it is possible to suppress the fluid from leaking to the outside. Therefore, safety when cooling the battery of the vehicle by the cooling equipment can be improved.

The second aspect is
An onboard cooling device (20) mounted on a vehicle (60) together with a battery (11) to cool the battery,
An in-vehicle connector (65) detachably connected to an equipment connector (100) of a predetermined external equipment (70);
With
Automotive connectors are
In the state where the vehicle-mounted connector and the equipment connector are connected to each other, the vehicle-mounted heat exchange part (46, 121) is cooled by heat exchange with the equipment heat exchange part (93) of the equipment connector to cool the battery. It is an in-vehicle cooling device.

  According to the second aspect, when the user connects the equipment connector of the cooling equipment to the on-vehicle connector, the on-vehicle heat exchange part is cooled by heat exchange between the equipment heat exchange part of the equipment connector and the on-vehicle heat exchange part of the on-vehicle connector. Then, the vehicle battery is cooled by the on-vehicle heat exchange unit. Therefore, the same effect as in the first aspect can be obtained.

A third aspect is:
A cooling system (95) for cooling a battery (11) mounted on a vehicle (60),
A first connector (65) mounted on the vehicle;
A second connector (100) provided at a predetermined external facility (70) and detachably connected to the first connector;
With
The first connector is
A first heat exchange section (46, 121) for cooling the battery;
The second connector is
A cooling system having a second heat exchange section (93) for cooling the first heat exchange section by heat exchange with the first heat exchange section in a state where the first connector and the second connector are connected to each other; It is.

  According to the third aspect, when the user connects the second connector to the first connector mounted on the vehicle, heat exchange is performed between the second heat exchange unit of the second connector and the first heat exchange unit of the first connector. Is cooled, and the battery of the vehicle is cooled by the first heat exchange unit. Therefore, the same effect as in the first aspect can be obtained.

FIG. 1 is a diagram illustrating a configuration of a cooling system according to a first embodiment. The schematic diagram which shows the structure of a cooling facility. Sectional drawing which shows the state in which the vehicle-mounted connector and the equipment connector were connected. Sectional drawing which shows each structure of an in-vehicle connector and an equipment connector. 9 is a flowchart illustrating a procedure of equipment cooling processing. 9 is a flowchart illustrating a procedure of a vehicle-mounted cooling process. The figure which shows the structure of the cooling system in 2nd Embodiment.

  Hereinafter, a plurality of embodiments for carrying out the present disclosure will be described with reference to the drawings. In each embodiment, portions corresponding to the items described in the preceding embodiment are denoted by the same reference numerals, and redundant description may be omitted. When only a part of the configuration is described in each embodiment, the other embodiments described above can be applied to other parts of the configuration. Not only the combination of parts that clearly indicate that a combination is possible in each form, but also the forms can be partially combined without being specified, unless there is a particular problem with the combination. It is possible.

(1st Embodiment)
The battery pack 10 shown in FIG. 1 is mounted on a vehicle 60 (see FIG. 2) such as a hybrid vehicle. The vehicle 60 has both a motor and an internal combustion engine as driving power sources, and the battery pack 10 supplies power to the motor. The battery pack 10 includes a battery cell 11 for storing electric power, and a pack case 12 (see FIG. 2) containing the battery cell 11. The battery cell 11 is a secondary battery such as a nickel hydride secondary battery, a lithium ion secondary battery, and an organic radical battery. The battery pack 10 has a plurality of battery cells 11, and these battery cells 11 are electrically connected to each other. In the battery pack 10, a plurality of battery packs having a plurality of battery cells 11 are provided inside a pack case 12. The battery cell 11 corresponds to a battery, and the pack case 12 corresponds to a case body.

  The battery pack 10 has a battery temperature sensor 13 for detecting the temperature of the battery cell 11. The battery temperature sensor 13 is attached to at least one of the battery cells 11. The battery temperature sensor 13 may be attached to the pack case 12. In this case, the battery temperature sensor 13 can detect the internal temperature of the pack case 12 as the temperature of the battery cell 11.

  The vehicle 60 is equipped with an in-vehicle cooling system 20 that cools a vehicle compartment and a battery using a refrigerant. The vehicle-mounted cooling system 20 has a vehicle-mounted refrigeration circuit 21 that uses a refrigerant of a refrigeration cycle, and a water-cooled vehicle-mounted circuit 25 that uses water (hereinafter, also referred to as cooling water) as a refrigerant. Note that the vehicle-mounted cooling system 20 corresponds to a vehicle-mounted cooling device, the refrigerated vehicle-mounted circuit 21 corresponds to a second vehicle-mounted circuit, and the refrigerant of the refrigerated vehicle-mounted circuit 21 corresponds to a second vehicle-mounted refrigerant. The water-cooled vehicle-mounted circuit 25 corresponds to a first vehicle-mounted circuit, and the cooling water of the water-cooled vehicle-mounted circuit 25 corresponds to a first vehicle-mounted refrigerant. Further, the vehicle-mounted cooling system 20 may be referred to as a vehicle-mounted cooling circuit.

  The in-vehicle refrigeration circuit 21 is capable of performing cooling as air conditioning in the vehicle cabin and cooling the cooling water of the in-vehicle water-cooled circuit 25. The refrigeration in-vehicle circuit 21 is connected to a circuit 22 for cooling the air in the vehicle compartment, a circuit 23 for cooling the air in the pack case 12, and to both the circuit 22 for the vehicle interior and the circuit 23 for the pack. And a common circuit 24.

  The onboard refrigeration circuit 21 includes a compressor 31, a condenser 32, solenoid valves 33a and 33b, expansion valves 34a and 34b, and heat exchangers 35a and 35b.

  The compressor 31 is an electric compressor that increases the pressure and temperature of the refrigerant by compressing the refrigerant. Further, the compressor 31 has a function as a circulation pump for circulating the refrigerant in the on-board refrigeration circuit 21.

  The condenser 32 is a condenser that condenses the refrigerant by releasing the heat of the refrigerant. The heat exchangers 35a and 35b are evaporators such as evaporators that evaporate a liquid-phase refrigerant by expanding the refrigerant. The refrigerant changes its phase from a gas phase to a liquid phase in the compressor 31, and changes from a liquid phase to a gas phase in the heat exchangers 35a and 35b. The heat exchangers 35a and 35b are heat exchangers for cooling the object to be cooled by heat exchange, and the condenser 32 is a heat exchanger for releasing the heat of the refrigerant absorbed by the heat exchangers 35a and 35b to the outside. , And corresponds to a radiator.

  The solenoid valves 33a and 33b are high-pressure shut-off valves provided between the condenser 32 and the heat exchangers 35a and 35b, and can stop the supply of the refrigerant to the heat exchangers 35a and 35b. I have. The expansion valves 34a and 34b are provided between the solenoid valves 33a and 33b and the heat exchangers 35a and 35b, and are expansion valves for expanding the refrigerant flowing into the heat exchangers 35a and 35b.

  Further, the refrigeration vehicle-mounted circuit 21 includes a receiver 36 and a pressure sensor 37. The receiver 36 is provided for the condenser 32 and can temporarily store the refrigerant supplied from the condenser 32 to the heat exchangers 35a and 35b. The pressure sensor 37 detects the pressure of the refrigerant supplied from the condenser 32 to the heat exchangers 35a and 35b.

  The vehicle interior circuit 22 includes a vehicle interior electromagnetic valve 33a, a vehicle interior expansion valve 34a, and a vehicle interior heat exchanger 35a. The pack circuit 23 includes a pack electromagnetic valve 33b, a pack expansion valve 34b, and a pack heat exchanger 35b. The cabin circuit 22 and the pack circuit 23 are connected in parallel to the common circuit 24. In this configuration, at least one of the vehicle compartment heat exchanger 35a and the pack heat exchanger 35b is selected as the supply destination of the refrigerant from the condenser 32 by the opening and closing operations of the solenoid valves 33a and 33b.

  In the pack case 12 of the battery pack 10, the pack expansion valve 34b and the pack heat exchanger 35b of the pack circuit 23 are installed. The battery pack 10 has a pack expansion valve 34b and a pack heat exchanger 35b.

  The vehicle 60 is equipped with an air conditioner for air-conditioning the passenger compartment. This air-conditioner is configured to include the passenger compartment expansion valve 34a and the passenger compartment heat exchanger 35a in the passenger compartment circuit 22. Air conditioning unit 40. The air conditioning unit 40 is, for example, HVAC (Heating, Ventilation, and Air Conditioning), and is provided inside an instrument panel mounted on the vehicle 60. The air conditioning unit 40 includes a unit case 41 that accommodates the vehicle interior expansion valve 34a and the vehicle interior heat exchanger 35a, a vehicle interior ventilation unit 38 installed in the unit case 41, and a vehicle interior heat exchanger 35a. And an evaporation temperature sensor 39 for detecting the temperature of the fuel cell. The vehicle interior blower 38 has an electric motor and a fan, and is capable of sending out the air cooled by the vehicle interior heat exchanger 35a as cold air into the vehicle interior.

  The in-vehicle air conditioner has a heating circuit 50 for heating the interior of the vehicle. The heating circuit 50 has a heater core 51 for heating the refrigerant with engine cooling water, a heater unit for further heating the refrigerant heated by the heater core 51, and a circulation pump for circulating the refrigerant in the heating circuit 50. The heater core 51 of the heating circuit 50 is installed in the unit case 41 of the air conditioning unit 40.

  In the vehicle 60, a vehicle compartment is defined by a vehicle body 61 as a vehicle body, and an engine room is formed in front of the vehicle compartment. The common circuit 24 is provided in front of a vehicle compartment, such as inside an instrument panel or an engine room. For example, the condenser 32 is provided behind the front grill in an engine room so as to be in contact with outside air. The battery pack 10 is attached to the vehicle body 61 between the front wheel 62a and the rear wheel 62b so as to be exposed below the vehicle body 61. The pack case 12 is a flat box that is thin vertically and has a rectangular shape in plan view. The pack case 12 is formed of a resin material or the like.

  The water-cooled vehicle-mounted circuit 25 includes a vehicle-side chiller 45, a vehicle-side chiller 46, a vehicle-mounted pump 47, and a battery cooling unit 48. The cooling water of the water-cooled vehicle-mounted circuit 25 circulates so as to pass through the chillers 45 and 46, the vehicle-mounted pump 47 and the battery cooling unit 48.

  The vehicle interior chiller 45 is provided so as to be able to exchange heat with the pack heat exchanger 35b of the refrigeration vehicle-mounted circuit 21, and is cooled by the pack heat exchanger 35b. When heat exchange is performed between the refrigerant of the on-board refrigeration circuit 21 and the cooling water of the on-board water-cooled circuit 25 via the pack heat exchanger 35b and the vehicle-side chiller 45, the on-board circuit of the water-cooled on-board circuit 21 25 cooling waters are cooled. The vehicle interior chiller 45 is a cooling unit that cools the cooling water, and corresponds to a vehicle-mounted cooling unit.

  The vehicle-mounted pump 47 is an electric pump that sends cooling water to the vehicle-side chiller 46, and circulates the cooling water in the water-cooled vehicle-mounted circuit 25. The in-vehicle pump 47 can change the supply amount of cooling water per unit time. In the present embodiment, the supply amount per unit time is simply referred to as a supply amount or a circulation amount. The in-vehicle pump 47 supplies the cooling water in such a direction that the refrigerant flowing through the pack heat exchanger 35b and the cooling water flowing through the inboard chiller 45 become countercurrent. Note that the refrigerant flowing through the pack heat exchanger 35b and the cooling water flowing through the vehicle interior chiller 45 may be in a parallel flow or a cross flow.

  The battery cooling unit 48 is a passage forming unit such as a pipe that forms a passage through which the cooling water flows, and has thermal conductivity. The battery cooling unit 48 is provided in a state where heat exchange with the battery cell 11 is possible, and cools the battery cell 11 by causing heat exchange between the cooling water and the battery cell 11. A plurality of battery cooling units 48 are provided, and each battery cooling unit 48 is provided at a position where heat exchange is performed with at least one battery cell 11.

  The vehicle-side chiller 46 is a cooling unit that cools the cooling water, and corresponds to a vehicle-mounted heat exchange unit and a first heat exchange unit. The vehicle exterior chiller 46 is provided between the battery cooling unit 48 and the vehicle interior chiller 45 in the water-cooled vehicle-mounted circuit 25. After passing through the battery cooling section 48, the cooling water passes through the outer chiller 46 and reaches the inner chiller 45. In this way, the cooling water is cooled by the vehicle-side chiller 46 after the temperature rises in the battery cooling unit 48, and then further cooled by the vehicle-side chiller 45.

  The vehicle-mounted cooling system 20 includes a vehicle-mounted cooling unit 55 that cools the cooling water supplied to the battery cooling unit 48. The vehicle-mounted cooling unit 55 includes a part of the water-cooled vehicle-mounted circuit 25 and a part of the pack circuit 23. Specifically, the vehicle-mounted cooling unit 55 includes at least the vehicle-side chiller 45, the vehicle-side chiller 46, the vehicle-mounted pump 47, the pack expansion valve 34b, and the pack heat exchanger 35b. The vehicle-mounted cooling unit 55 is formed by unitizing the vehicle-side chiller 45, the vehicle-side chiller 46, the vehicle-mounted pump 47, and the pack heat exchanger 35b. It is installed.

  The battery pack 10 includes a vehicle-mounted cooling unit 55, a battery pack 10, a battery cooling unit 48, and a battery temperature sensor 13. However, the vehicle-side chiller 46 of the vehicle-mounted cooling unit 55 is not housed in the pack case 12 and is arranged at a position separated from the pack case 12 while being included in a vehicle-mounted connector 65 described later.

  The vehicle 60 has an inlet as a power receiving unit to which external power such as commercial power is supplied. The inlet portion is provided at a position near the rear end of the vehicle body 61, and the battery cells 11 are charged by electric power supplied to the battery cells 11 via the inlet portion. The inlet portion is arranged at a position near the vehicle-mounted connector 65.

  The vehicle 60 has an ECU (Electronic Control Unit) 64 as a control device that manages the state of charge of the battery pack 10, controls the operation of the water-cooled in-vehicle circuit 25, and controls the air-conditioning state of the air-conditioning unit 40. The ECU 64 is an electronic circuit including at least one processor, a storage device, and an input / output interface. The processor is an arithmetic circuit that executes a computer program stored in a storage device. The storage device is a non-transitional substantial storage medium that is provided by, for example, a semiconductor memory or the like and temporarily stores a computer program and data readable by a processor.

  The ECU 64 is electrically connected to the in-vehicle cooling system 20, and can individually control the operation of the on-board refrigeration circuit 21 and the operation of the on-water cooling circuit 25. The ECU 64 is electrically connected to, for example, the vehicle-mounted pump 47 as an actuator of the water-cooled vehicle-mounted circuit 25, and controls the operating state of the vehicle-mounted pump 47 by outputting a command signal. The ECU 64 has a function of performing a vehicle-mounted cooling process for cooling the battery cells 11, and corresponds to a vehicle-mounted control unit.

  When the battery cells 11 are being charged, heat is generated in the battery cells 11 and the like, and the temperatures of the battery cells 11 and the battery pack 10 may rise excessively. On the other hand, the cooling equipment 70 shown in FIGS. 1 and 2 is installed outdoors or indoors, and can cool the vehicle 60 when the battery cells 11 are charged. The cooling facility 70 includes a facility cooling system 71 that cools the battery cells 11 via the vehicle-mounted exterior chiller 46, and a controller 75 that controls the operation of the facility cooling system 71. The cooling equipment 70 cools the battery cells 11 for the vehicle 60 parked on the parking surface G such as the ground or the floor, and corresponds to external equipment. Note that the equipment cooling system 71 can also be referred to as an equipment cooling circuit.

  As shown in FIG. 1, the equipment cooling system 71 has a refrigeration equipment circuit 72 using a refrigerant of a refrigeration cycle and a water cooling equipment circuit 73 using water (hereinafter, also referred to as cooling water) as a refrigerant. ing. The refrigeration equipment circuit 72 cools the vehicle-side chiller 46 by cooling the cooling water of the water-cooling equipment circuit 73. The refrigeration equipment circuit 72 corresponds to the second equipment circuit, and the refrigerant in the refrigeration equipment circuit 72 corresponds to the second equipment refrigerant. The water cooling equipment circuit 73 corresponds to the first equipment circuit, and the cooling water of the water cooling equipment circuit 73 corresponds to the first equipment refrigerant.

  The refrigeration equipment circuit 72 includes a compressor 81, a condenser 82, an electromagnetic valve 83, an expansion valve 84, and an equipment heat exchanger 85. The refrigeration equipment circuit 72 has basically the same configuration as the on-board pack circuit 23 and the common circuit 24 of the on-board refrigeration circuit 21.

  The compressor 81 is an electric compressor that increases the pressure and temperature of the refrigerant by compressing the refrigerant, similarly to the compressor 31 mounted on the vehicle. The compressor 81 has a function as a circulation pump for circulating the refrigerant in the refrigeration equipment circuit 72.

  The condenser 82 is a condenser that condenses the refrigerant by releasing heat of the refrigerant, similarly to the condenser 32 mounted on the vehicle. The equipment heat exchanger 85 is an evaporator such as an evaporator that evaporates a liquid-phase refrigerant by expanding the refrigerant. The refrigerant changes its phase from a gas phase to a liquid phase in the compressor 81, and changes from a liquid phase to a gas phase in the equipment heat exchanger 85. The equipment heat exchanger 85 is a cooling heat exchange unit that cools the object to be cooled by heat exchange. The condenser 82 is a radiator heat for releasing the heat of the refrigerant absorbed by the equipment heat exchanger 85 to the outside. It is an exchange part and corresponds to a heat radiation part.

  The electromagnetic valve 83 is a high-pressure shutoff valve, similar to the pack electromagnetic valve 33b mounted on the vehicle, and is provided between the condenser 82 and the equipment heat exchanger 85 to stop the supply of the refrigerant to the equipment heat exchanger 85. It has become possible. The expansion valve 84 is an expansion valve similar to the pack expansion valve 34b mounted on the vehicle, and is provided between the solenoid valve 83 and the equipment heat exchanger 85 to expand the refrigerant flowing into the equipment heat exchanger 85.

  Further, the refrigeration equipment circuit 72 has a receiver 86 and a pressure sensor 87. The receiver 86 is provided for the condenser 82 and can temporarily store the refrigerant supplied from the condenser 82 to the equipment heat exchanger 85. The pressure sensor 87 detects the pressure of the refrigerant supplied from the condenser 82 to the equipment heat exchanger 85.

  The water cooling equipment circuit 73 includes an equipment chiller 91, an equipment pump 92, and a chiller cooling unit 93. The cooling water of the water cooling equipment circuit 73 circulates so as to pass through the equipment chiller 91, the equipment pump 92, and the chiller cooling unit 93.

  The equipment chiller 91 is provided so as to be able to exchange heat with the equipment heat exchanger 85 of the refrigeration equipment circuit 72, and is cooled by the equipment heat exchanger 85. When heat exchange is performed between the refrigerant of the refrigeration equipment circuit 72 and the cooling water of the water cooling equipment circuit 73 via the equipment heat exchanger 85 and the equipment chiller 91, the refrigerant of the refrigeration equipment circuit 72 Cooling water is cooled.

  The equipment pump 92 is an electric pump that sends cooling water to the equipment chiller 91, and circulates the cooling water in the water cooling equipment circuit 73. The equipment pump 92 can change the supply amount of cooling water per unit time. In the present embodiment, the supply amount per unit time is simply referred to as a supply amount or a circulation amount. The equipment pump 92 supplies the cooling water in such a direction that the refrigerant flowing through the equipment heat exchanger 85 and the cooling water flowing through the equipment chiller 91 become countercurrent. The refrigerant flowing through the facility heat exchanger 85 and the cooling water flowing through the facility chiller 91 may be in a parallel flow or a cross flow.

  The chiller cooling unit 93 can be connected to the vehicle-side vehicle-side chiller 46, and heat exchange with the vehicle-side vehicle-side chiller 46 is possible in the connected state. The chiller cooling unit 93 is a cooling unit that cools the vehicle-side chiller 46 by heat exchange, and corresponds to a facility heat exchange unit and a second heat exchange unit.

  The controller 75 is an electronic circuit including at least one processor, a storage device, and an input / output interface. The processor is an arithmetic circuit that executes a computer program stored in a storage device. The storage device is a non-transitional substantial storage medium that is provided by, for example, a semiconductor memory or the like and temporarily stores a computer program and data readable by a processor.

  The controller 75 is electrically connected to the equipment cooling system 71, and can individually control the operation of the refrigeration equipment circuit 72 and the operation of the water cooling equipment circuit 73. The controller 75 is, for example, electrically connected to the equipment pump 92 as an actuator of the water cooling equipment circuit 73, and controls the operating state of the equipment pump 92 by outputting a command signal. The controller 75 has a function of performing equipment cooling processing for cooling the battery cells 11 by cooling the vehicle-mounted exterior chiller 46, and corresponds to an equipment control unit.

  In the present embodiment, a cooling system 95 is formed by the vehicle-mounted cooling system 20 and the facility cooling system 71. In the cooling system 95, when the vehicle-side chiller 46 of the vehicle-mounted cooling system 20 and the facility chiller 91 of the facility cooling system 71 are connected to each other so as to be able to exchange heat, the vehicle-mounted cooling system 20 and the facility cooling system 71 are used. Battery cell 11 can be cooled.

  As shown in FIG. 1 and FIG. 2, the vehicle 60 has an on-board connector 65 including the outer chiller 46, and the cooling facility 70 includes an equipment connector including a chiller cooling unit 93. 100. The vehicle-mounted connector 65 and the facility connector 100 can be connected to each other, and heat exchange between the vehicle-side chiller 46 and the chiller cooling unit 93 is performed in a state where the vehicle-mounted connector 65 and the facility connector 100 are connected. In this state, the vehicle-side chiller 46 and the chiller cooling unit 93 are in contact with each other or close to each other.

  The vehicle-mounted connector 65 is provided at a position close to the inlet portion, for example, at a position near the rear end of the vehicle body 61. The vehicle 60 has a protective cover that protects the vehicle-mounted connector 65. The protection cover covers the vehicle-mounted connector 65 in an exposed state in which the vehicle-mounted connector 65 is exposed to the outside so that the vehicle-mounted connector 65 can be connected to the facility connector 100. It is possible to shift to the protection state to protect. In the water-cooled vehicle-mounted circuit 25, at least the vehicle interior chiller 45, the vehicle-mounted pump 47, and the battery cooling unit 48 are housed in the pack case 12, and the vehicle exterior chiller 46 is provided outside the pack case 12 so that the inlet is provided. It is arranged at a position close to the part.

  The cooling equipment 70 includes, in addition to the equipment connector 100, a cooling case 105 that houses at least a part of the equipment cooling system 71, and a cooling cable 106 that circulates cooling water to the chiller cooling unit 93 of the equipment connector 100. I have.

  The cooling case 105 is a rectangular parallelepiped box, and is installed on the parking surface G. The controller 75 is attached to the cooling case 105. The cooling cable 106 is formed by a pipe such as a tube that forms a water passage through which the cooling water flows. The equipment connector 100 includes at least the chiller cooling unit 93 in the water cooling equipment circuit 73. The cooling cable 106 has at least a part of a water passage connecting the chiller cooling part 93 and the equipment pump 92 and at least a part of a water passage connecting the chiller cooling part 93 and the equipment chiller 91 in the water cooling equipment circuit 73. And are included. The cooling case 105 accommodates at least the equipment chiller 91 and the equipment pump 92 in the refrigeration equipment circuit 72 and the water cooling equipment circuit 73.

  As shown in FIGS. 3 and 4, when the vehicle-mounted connector 65 and the facility connector 100 are connected to each other, the center line CL1 of the vehicle-mounted connector 65 and the center line CL2 of the facility connector 100 extend parallel to each other and coincide with each other. I have. The in-vehicle connector 65 and the equipment connector 100 include housings 66 and 101 that support the connectors 65 and 100, in addition to the connectors 65 and 100. The center line CL1 of the vehicle-mounted connector 65 corresponds to the center line of the vehicle, and the center line CL2 of the equipment connector 100 corresponds to the center line of the equipment.

  The outer chiller 46 of the vehicle-mounted connector 65 is formed of a relatively lightweight metal material such as aluminum, and has corrosion resistance and heat conductivity. The vehicle exterior chiller 46 has a chiller body 46a and a plurality of chiller fins 46b extending from the chiller body 46a along the center line CL1. A water passage 68 through which cooling water flows is formed in the vehicle outer chiller 46. The water passage 68 has a main body passage portion 68a formed in the chiller main body 46a and a fin passage portion 68b formed in the chiller fin 46b. The fin passage portion 68b is formed in each of the plurality of chiller fins 46b. In the water passage 68, the main body passage portion 68a and the fin passage portion 68b are arranged alternately from the upstream side. In this case, the water passage 68 has a shape in which the cooling water sequentially flows through the plurality of chiller fins 46b one by one. The plurality of chiller fins 46b each extend in a plate shape along the center line CL1, and are arranged in parallel with each other along one direction orthogonal to the center line CL1.

  In addition, the vehicle-mounted connector 65 corresponds to a first connector, the chiller fins 46b correspond to the extension and the first extension of the vehicle-mounted heat exchange unit, and the fin passage 68b corresponds to the passage and the first passage. .

  The chiller cooling section 93 of the equipment connector 100 is formed of a relatively lightweight metal material such as aluminum, and has corrosion resistance and heat conductivity. The chiller cooling unit 93 has a cooling body 93a and a plurality of cooling fins 93b extending from the cooling body 93a along the center line CL2. A water passage 103 through which cooling water flows is formed in the chiller cooling section 93. The water passage 103 has a main body passage portion 103a formed in the cooling main body 93a and a fin passage portion 103b formed in the cooling fin 93b. The fin passage portion 103b is formed in each of the plurality of cooling fins 93b. In the water passage 103, the main body passage portion 103a and the fin passage portion 103b are alternately arranged from the upstream side. In this case, the water passage 103 has a shape in which the cooling water sequentially flows through the plurality of cooling fins 93b one by one. The plurality of cooling fins 93b each extend in a plate shape along the center line CL2, and are arranged in parallel with each other along one direction orthogonal to the center line CL2.

  Note that the equipment connector 100 corresponds to the second connector, the cooling fins 93b correspond to the extension and the second extension of the equipment heat exchange unit, and the fin passage 103b corresponds to the passage and the second passage. I do.

  The in-vehicle connector 65 and the equipment connector 100 can be connected to each other in a first state in which the respective center lines CL1 and CL2 extend in parallel, and one of the center lines CL1 and CL2 is predetermined relative to the other from the first state. Even in the second state rotated by an angle, they can be connected to each other. The predetermined angle is, for example, 180 degrees. In the vehicle-mounted connector 65, a portion connected to the equipment connector 100 has a point-symmetrical shape about the center line CL1, and a portion connected to the vehicle-mounted connector 65 in the equipment connector 100 has the center line CL2 as an axis. It has a point-symmetric shape. Specifically, in the connectors 65 and 100, the main bodies 46a and 93a and the fins 46b and 93b are all point-symmetric with respect to the center lines CL1 and CL2. In this case, it can be said that the connection portions of the on-vehicle connector 65 and the facility connector 100 have a 180-degree symmetric shape about the center lines CL1 and CL2.

  When the vehicle-mounted connector 65 and the equipment connector 100 are in the first state in which they are connected to each other, the attitude of the vehicle-mounted connector 65 and the attitude of the equipment connector 100 correspond to the first attitude, respectively. When one of the connectors is reversed from the first state with respect to the other about the center line and shifted to the second state, the posture of the reversed connector corresponds to the second posture. For example, when the vehicle-mounted connector 65 is inverted around the center line CL1 from the first state, the posture of the vehicle-mounted connector 65 corresponds to the second posture. Further, the cooling water flowing through the vehicle-mounted connector 65 and the cooling water flowing through the equipment connector 100 have a counterflow in one of the first state and the second state, and have a parallel flow in the other. It should be noted that cross-flow may be established in both the first state and the second state.

  A charging facility 110 for charging the battery cell 11 by supplying electric power to the vehicle 60 is provided for the cooling facility 70. Charging facility 110 has a power supply unit capable of supplying external power to vehicle 60, a power supply plug attached to an inlet of vehicle 60, and a power supply cable for supplying power from the power supply unit to the power supply plug. ing. The power supply cable is separate from the cooling cable 106, and the power supply plug is separate from the equipment connector 100. Note that the power supply cable corresponds to a charging cable.

  The charging facility 110 is provided integrally with the cooling facility 70, for example, the power supply unit is attached to the cooling case 105. In the charging facility 110, an operation unit such as an operation panel that can be operated by a user is provided in the power supply unit and the cooling case 105. The power supply unit is electrically connected to the battery cell 11 of the vehicle 60 when the power supply plug is attached to the inlet, and the power supply unit can be supplied to the battery cell 11. The controller 75 is electrically connected to the power supply unit, and controls the operation of the power supply unit by outputting a command signal according to the content of a user operation on the operation unit.

  Next, the equipment cooling process executed by the controller 75 will be described with reference to FIG. The controller 75 repeatedly executes the equipment cooling process at predetermined intervals.

  In FIG. 5, in step S101, it is determined whether or not to start charging the vehicle 60. Here, it is determined whether or not the power supply plug of the charging facility 110 has been attached to the inlet of the vehicle 60 and whether or not an operation for permitting power supply to the vehicle 60 has been performed on the operation unit. When these determinations are affirmed, it is determined that charging is to be started. When charging is started, the process proceeds to step S102, and charging of the battery cell 11 by the charging facility 110 is started. In addition, when the charging is started, the normal charging mode or the rapid charging mode is selected as the charging mode for charging the battery cell 11 according to the user's operation on the operation unit and the like. When the fast charging mode is selected, the current flowing through the battery cell 11 with the power supply from the charging facility 110 is larger than when the normal charging mode is selected, and the time required for charging the battery cell 11 is reduced. Note that the normal charging mode corresponds to the first charging mode, and the quick charging mode corresponds to the second charging mode.

  In step S103, it is determined whether the charging mode is the rapid charging mode. In the case of the rapid charging mode, the cooling mode of the cooling facility 70 is set to the rapid cooling mode in step S104, and the rapid cooling process is performed in step S105. If it is not the rapid charging mode, the cooling mode is set to the normal cooling mode in step S106, and the normal cooling process is performed in step S107.

  When the cooling mode is set to the rapid cooling mode in step S104, the circulation amount of the cooling water in the water cooling equipment circuit 73 by the equipment pump 92 is smaller than when the cooling mode is set to the normal cooling mode in step S106. Set to a large value. Specifically, in step S106, the operation state of the equipment pump 92 is set to the normal operation state, so that the circulation amount of the cooling water in the normal cooling mode is set to the first equipment value. In step S104, by setting the operation state of the equipment pump 92 to the rapid operation state, the circulation amount of the cooling water in the rapid cooling mode is set to the second equipment value larger than the first equipment value. In this case, the rotation rate of the equipment pump 92 is increased at the time of quick charging as compared with the time of normal charging.

  In the rapid cooling process in step S105, the equipment pump 92 is driven so as to have the circulation amount set in step S104. Specifically, the equipment pump 92 is driven so that the cooling water circulation amount becomes the second equipment value. Here, the chiller equipment circuit 72 is driven to cool the equipment chiller 91 by the equipment heat exchanger 85, and the chiller cooling unit 93 is cooled by the cooling water cooled by the equipment chiller 91. Therefore, when the vehicle-mounted pump 47 is driven in the vehicle 60, the cooling water circulating through the water-cooled vehicle-mounted circuit 25 is cooled by the chiller cooling unit 93 via the vehicle-side chiller 46, and the cooling water is supplied to the battery cooling unit 48. Thus, the battery cells 11 are cooled. As the circulation amount of the cooling water in the water cooling equipment circuit 73 increases, the cooling effect of the chiller cooling unit 93 on the vehicle-side chiller 46 increases, so that the temperature rise of the battery cells 11 in the quick charge mode can be suppressed.

  In the normal cooling process in step S107, the equipment pump 92 is driven so as to achieve the circulation amount set in step S106. Specifically, the equipment pump 92 is driven so that the circulation amount of the cooling water becomes the first equipment value. The smaller the circulation amount of the cooling water in the water cooling equipment circuit 73 is, the lower the cooling effect of the chiller cooling unit 93 on the vehicle-side chiller 46 becomes. Energy saving in the facility 70 can also be achieved.

  The amount of cooling water cooled by the equipment heat exchanger 85 of the refrigeration equipment circuit 72 in the equipment chiller 91 is greater when the rapid cooling processing is performed in step S105 than when the normal cooling processing is performed in step S107. To increase. In this case, the amount of the cooling water for cooling the outside chiller 46 of the water-cooled vehicle-mounted circuit 25 in the chiller cooling unit 93 increases, and the cooling water used for cooling the battery cells 11 in the water-cooled vehicle-mounted circuit 25 is cooled by the water-cooling equipment circuit 73. Easier to do.

  The controller 75 has a function of executing each step of the equipment cooling process. The function of executing the process of step S104 corresponds to a second facility setting unit, and the function of executing the process of step S106 corresponds to a first facility setting unit.

  Next, the vehicle-mounted cooling process executed by the ECU 64 will be described with reference to FIG.

  In FIG. 6, in step S201, it is determined whether charging of the battery cell 11 has been started. Here, it is determined whether or not the power supply plug is attached to the inlet portion and whether or not the charged amount of the battery cell 11 has started to increase. If these determinations are affirmed, the charging of the battery cell 11 is performed. Is determined to have started.

  If the charging has not been started, the process proceeds to step S202, and the circulation mode for circulating the cooling water in the water-cooled in-vehicle circuit 25 is set to the normal circulation mode. On the other hand, when charging is started, the process proceeds to step S203, and the circulation mode is set to the charge circulation mode. Here, when the power supply of the vehicle 60 is turned on by an ignition switch or the like, the battery cell 11 is cooled by the water-cooled vehicle-mounted circuit 25 because the vehicle-mounted pump 47 is basically driven. Therefore, in steps S202 and S203, processing for setting the circulation amount of the cooling water in the water-cooled vehicle-mounted circuit 25 is performed.

  When the circulation mode is set to the charge circulation mode in step S203, the circulation amount of the cooling water by the vehicle-mounted pump 47 is set to a larger value than when the circulation mode is set to the normal circulation mode in step S202. Specifically, in step S202, the operation state of the vehicle-mounted pump 47 is set to the normal operation state, so that the circulation amount of the cooling water in the normal circulation mode is set to the first vehicle-mounted value. In step S203, by setting the operation state of the vehicle-mounted pump 47 to the charging operation state, the circulation amount of the cooling water in the charging circulation mode is set to the second vehicle-mounted value larger than the first vehicle-mounted value. In this case, when the battery cell 11 is charged, the rotation rate of the on-vehicle pump 47 is increased as compared to when the battery cell 11 is not charged.

  After step S203, the process proceeds to step S204, and it is determined whether or not the vehicle compartment cooling is being performed by the vehicle-mounted cooling system 20 and the vehicle interior blower unit 38. If charging has been started and vehicle compartment cooling has been performed, the process proceeds to step S205, where the battery temperature Ta, which is the temperature of the battery cell 11, is calculated based on the detection signal of the battery temperature sensor 13, and the battery temperature Ta is calculated in advance. It is determined whether or not it is higher than the determined battery threshold Ta1.

  When the battery temperature Ta is higher than the battery threshold value Ta1, the process proceeds to step S206, in which the pack circuit 23 performs on-vehicle assistance for battery cooling. Here, the pack electromagnetic valve 33b is opened in the refrigeration vehicle-mounted circuit 21 to supply the refrigerant to the pack heat exchanger 35b, and the pack heat exchanger 35b cools the vehicle interior chiller 45 of the water-cooled vehicle-mounted circuit 25. In this case, in the water-cooled vehicle-mounted circuit 25, the battery cooling unit 48 is cooled by the cooling water cooled by the vehicle interior chiller 45, and the battery cell 11 is cooled by the battery cooling unit 48. Moreover, in this case, in the water-cooled vehicle-mounted circuit 25, the cooling water that reaches the vehicle-inside chiller 45 is already cooled by the vehicle-outer chiller 46 by the chiller cooling unit 93 of the cooling equipment 70, The cooling effect of the cooling water in the inner chiller 45 is improved. Therefore, in the in-vehicle cooling system 20, the supply amount of the refrigerant to the pack circuit 23 is reduced as much as possible, while the supply amount of the refrigerant to the vehicle interior circuit 22 is increased as much as possible to enhance the cooling effect of the air conditioning unit 40. be able to.

  On the other hand, when the battery temperature Ta is not higher than the battery threshold value Ta1, the process proceeds to step S207, and the water-cooled vehicle-mounted circuit 25 does not cool the battery cells 11 without driving the vehicle-mounted pump 47. Here, the supply of the refrigerant to the pack heat exchanger 35b is stopped by closing the pack electromagnetic valve 33b in the refrigeration vehicle-mounted circuit 21, the driving of the vehicle-mounted pump 47 is stopped, and the cooling water is supplied to the water-cooled vehicle-mounted circuit 25. Do not circulate. In this case, in the on-board refrigeration circuit 21, all the refrigerant is supplied to the cabin heat exchanger 35a by the cabin circuit 22, so that the cooling effect of the cabin can be enhanced. Even in this case, if the chiller cooling section 93 of the cooling facility 70 is cooling the vehicle-side chiller 46 of the water-cooled vehicle-mounted circuit 25, the battery cell 11 is cooled by the cooling water cooled by the vehicle-side chiller 46.

  The ECU 64 has a function of executing each step of the vehicle-mounted cooling process. The function of executing the process of step S202 corresponds to a first vehicle-mounted setting unit, and the function of executing the process of step S203 corresponds to a second vehicle-mounted setting unit.

  According to the present embodiment described above, in a state where the equipment connector 100 and the vehicle-mounted connector 65 are connected to each other, the chiller cooling unit 93 of the equipment connector 100 performs heat exchange with the vehicle-side chiller 46 of the equipment connector 100 by this heat exchange. The outside chiller 46 is cooled. In this configuration, since heat is exchanged between the chiller cooling unit 93 and the vehicle-side chiller 46, there is no need to exchange refrigerant between the cooling facility 70 and the vehicle 60, and the refrigerant leaks out. That can be suppressed. Therefore, the safety when cooling the battery cells 11 of the vehicle 60 by the cooling equipment 70 can be improved.

  In addition, since no refrigerant is exchanged between the cooling facility 70 and the vehicle 60, it is possible to prevent foreign matter such as dust from being mixed into the refrigerant, prevent the refrigerant from leaking out and decrease, and prevent the refrigerant from being exposed to the outside air. it can. For example, when the refrigerant leaks, there is a concern that the cost burden of maintenance for replenishing the cooling equipment 70 or the vehicle 60 with the refrigerant increases due to the relatively high cost of the refrigerant. Also, if the refrigerant has a greenhouse effect, there is a concern that leakage of the refrigerant may affect the global environment. Further, when lubricating oil from the compressor 31 or the like is mixed in the refrigerant, there is a concern that the refrigerant leaks and pollutes the environment. In addition, when the refrigerant has combustibility, there is a concern that the leaked refrigerant may catch fire. On the other hand, in the present embodiment, by avoiding leakage of the refrigerant, these concerns can be resolved and safety can be ensured. In particular, since water is nonflammable, safety against ignition can be ensured.

  The battery pack 10 of the vehicle 60 generates heat at the time of discharging or charging, and the temperature of the battery cells 11 and the air in the pack case 12 rises. If the high temperature state of the battery pack 10 continues for a long time, there is a concern that the battery performance may be reduced or deteriorated. Therefore, as in the present embodiment, it is desirable to perform charging while performing battery cooling during charging such as rapid charging. Unlike the present embodiment, in the method of cooling the battery cells 11 by supplying a coolant from outside the vehicle to the vehicle 60, when foreign matter is present in the connection portion, there is a concern that the foreign matter may enter the refrigerant circuit in the vehicle 60. You. Therefore, according to the present embodiment, the vehicle-mounted connector 65 having the relatively high heat conductivity and the vehicle-mounted connector 65 having the chiller cooling unit 93 and the equipment connector 100 are connected, and heat exchange is performed using cooling water. In this configuration, since the coolant such as the cooling water is not exposed to the outside air, the battery can be cooled without fear of foreign matter mixing or coolant leakage.

  According to the present embodiment, the cooling facility 70 has the facility pump 92. In this configuration, the cooling water is supplied to the chiller cooling unit 93 in accordance with the driving of the equipment pump 92, so that the chiller cooling unit 93 can be cooled by the cooling water.

  According to the present embodiment, since the cooling water passing through the chiller cooling unit 93 is water, even if the cooling water leaks out of the chiller cooling unit 93 or the like, the environment is contaminated by the cooling water. Can be avoided and, as a result, safety can be increased. Moreover, since water has a relatively high specific heat, the cooling water easily cools the chiller cooling section 93 in the water cooling equipment circuit 73, and a high battery cooling capacity can be obtained.

  According to the present embodiment, since the operating state of the equipment pump 92 is controlled by the controller 75, the operating state of the equipment pump 92 can be variably set in accordance with the state of charge of the battery cells 11 and the like. For this reason, when cooling the battery cell 11, it can suppress that the rotation rate of the equipment pump 92 runs short, and that the rotation rate of the equipment pump 92 becomes excessively high and wastes energy.

  According to the present embodiment, the circulation amount of the cooling water by the facility pump 92 is set to a larger value when the charging facility 110 is in the rapid charging mode than in the normal charging mode. In this configuration, in the rapid charging mode, the amount of heat exchange between the cooling water and the chiller cooling unit 93 in the water cooling equipment circuit 73 increases, so that the ability of the chiller cooling unit 93 to cool the outer chiller 46 is improved, and Accordingly, it is possible to suppress the temperature of the battery cell 11 from excessively rising. On the other hand, in the normal charging mode, the amount of cooling water circulated by the equipment pump 92 is suppressed within a range in which the cooling of the battery cells 11 is appropriately performed, so that energy saving of the water cooling equipment circuit 73 can be realized.

  According to the present embodiment, in the equipment cooling system 71, the cooling water in the water cooling equipment circuit 73 is cooled by the refrigerant in the refrigeration equipment circuit 72, and the chiller cooling unit 93 is cooled by this cooling water. With this configuration, it is not necessary to use the refrigerant of the refrigeration cycle as the refrigerant for cooling the chiller cooling unit 93, and water can be used as the refrigerant for cooling the chiller cooling unit 93. For this reason, even if the water which is the refrigerant leaks out in the chiller cooling section 93, it is possible to suppress a decrease in safety due to the leaked water.

  According to the present embodiment, the equipment connector 100 and the on-vehicle connector 65 can be connected to each other both in the first state and in the second state in which one is inverted around the center lines CL1 and CL2. As described above, since the equipment connector 100 and the vehicle-mounted connector 65 can be connected in two states, the equipment connector 100 and the vehicle-mounted connector 65 can be easily connected even when the hand is dark and difficult to see, such as at night. it can.

  According to the present embodiment, the chiller cooling section 93 of the equipment connector 100 has a plurality of cooling fins 93b. In this configuration, the contact area between the vehicle-side chiller 46 and the chiller cooling unit 93 is maximized by the cooling fins 93b. The chiller 46 on the outside of the vehicle-mounted connector 65 has a plurality of chiller fins 46b. In this configuration, the contact area between the vehicle-side chiller 46 and the chiller cooling unit 93 is maximized by the chiller fins 46b. According to these configurations, the heat exchange rate between the outer chiller 46 and the chiller cooling unit 93 is increased, and the cooling effect of the chiller cooling unit 93 on the outer chiller 46 can be enhanced.

  According to the present embodiment, when the vehicle-mounted connector 65 and the equipment connector 100 are connected to each other, the chiller fins 46b of the chiller 46 on the outside and the cooling fins 93b of the chiller cooling unit 93 alternately overlap. In this configuration, since the contact area between the vehicle exterior chiller 46 and the chiller cooling unit 93 is as large as possible, the heat exchange rate between the vehicle exterior chiller 46 and the chiller cooling unit 93 can be increased.

  According to the present embodiment, the fin passage 103b through which the cooling water flows is provided inside the cooling fin 93b. In this configuration, the cooling effect of the cooling water on the cooling fins 93b can be increased as compared with a configuration in which the cooling water does not flow inside the cooling fins 93b, for example. A fin passage portion 68b through which the cooling water flows is provided inside the chiller fin 46b. With this configuration, the cooling effect of the cooling water on the chiller fins 46b can be increased, for example, as compared with a configuration in which the cooling water does not flow inside the chiller fins 46b. According to these configurations, the effect of cooling water flowing through the chiller cooling section 93 to cool cooling water flowing through the vehicle-side chiller 46 can be enhanced.

  According to the present embodiment, the fin passage portion 68b is provided inside the chiller fin 46b, and the fin passage portion 103b is provided inside the cooling fin 93b. In this configuration, the cooling effect of the cooling fins 93b by the cooling water can be enhanced in the facility connector 100, and the cooling effect of the cooling water can be enhanced by the chiller fins 46b in the vehicle-mounted connector 65. In this case, since the cooling effect of the cooling water of the water-cooled vehicle-mounted circuit 25 by the cooling water of the water-cooling equipment circuit 73 is enhanced, the cooling effect of the cooling water in the water-cooled vehicle-mounted circuit 25 can be enhanced.

  According to the present embodiment, the vehicle-mounted cooling system 20 includes the vehicle-mounted pump 47. In this configuration, since the cooling water is supplied from the vehicle-side chiller 46 to the battery cell 11 side with the driving of the vehicle-mounted pump 47, the battery cell 11 can be cooled by the cooling water cooled by the vehicle-side chiller 46. it can.

  According to the present embodiment, since the cooling water passing through the outer chiller 46 is water, even if the cooling water leaks out of the outer chiller 46 or the like, the environment is contaminated by the cooling water. Can be avoided and, as a result, safety can be increased. Moreover, since water has a relatively high specific heat, in the water-cooled vehicle-mounted circuit 25, the vehicle-side chiller 46 can easily cool the cooling water, and a high battery cooling capacity can be obtained.

  According to the present embodiment, since the operating state of the on-board pump 47 is controlled by the ECU 64, the operating state of the on-board pump 47 can be variably set in accordance with the situation such as whether or not the battery cell 11 is charged. . For this reason, it is possible to suppress the rotation rate of the vehicle-mounted pump 47 from being insufficient when cooling the battery cells 11, and to prevent the rotation rate of the vehicle-mounted pump 47 from excessively increasing and wasting energy.

  According to the present embodiment, the circulation amount of the cooling water by the vehicle-mounted pump 47 is set to a larger value when the battery cell 11 is charged than when the battery cell 11 is not charged. Have been. In this configuration, when the battery cell 11 is being charged, the amount of heat exchange between the cooling water and the outside chiller 46 in the water-cooled vehicle-mounted circuit 25 increases, so that the ability of the outside chiller 46 to cool the cooling water is increased. And the temperature of the battery cell 11 can be prevented from rising excessively. On the other hand, when the battery cell 11 is not charged, the amount of cooling water circulated by the on-board pump 47 is suppressed within a range where the cooling of the battery cell 11 is properly performed. Can be realized.

  According to the present embodiment, in the vehicle-mounted cooling system 20, the coolant in the water-cooled vehicle-mounted circuit 25 is cooled by the refrigerant in the refrigerated vehicle-mounted circuit 21, and the battery cell 11 is cooled by the cooling water. In this configuration, it is not necessary to use the refrigerant of the refrigeration cycle as the refrigerant cooled by the vehicle-side chiller 46, and water can be used as the refrigerant cooled by the vehicle-side chiller 46. For this reason, even if the water which is the refrigerant leaks out of the vehicle-side chiller 46, it is possible to prevent the leaked water from lowering the safety. Further, since the battery cooling unit 48 for cooling the battery cells 11 is included in the water-cooled vehicle-mounted circuit 25, in the water-cooled vehicle-mounted circuit 25, the battery cooling unit 48 can be directly cooled by the vehicle-side chiller 46. Thereby, the cooling of the battery cell 11 can be performed effectively.

(2nd Embodiment)
In the above-described first embodiment, the vehicle-side chiller 46 included in the water-cooled vehicle-mounted circuit 25 is used as the vehicle-mounted heat exchange unit of the vehicle-mounted connector 65. 21. In the second embodiment, components denoted by the same reference numerals as those in the drawings according to the first embodiment and configurations not described are the same as those of the first embodiment, and have the same functions and effects. In the second embodiment, portions different from the first embodiment will be described.

  As shown in FIG. 7, the vehicle-mounted connector 65 has a vehicle-side heat exchanger 121 as a vehicle-mounted heat exchange unit. The vehicle exterior heat exchanger 121 is included in the common circuit 24 of the refrigeration vehicle-mounted circuit 21, and is provided in the common circuit 24 on the downstream side of the condenser 32. Specifically, it is provided between the condenser 32 and the pressure sensor 37. Although the cooling water flows through the vehicle-side chiller 46 of the first embodiment, the refrigerant used in the refrigeration cycle in the vehicle-mounted refrigeration circuit 21 flows through the vehicle-side heat exchanger 121. Note that the vehicle-side heat exchanger 121 corresponds to a first heat exchange unit in addition to the vehicle-mounted heat exchange unit.

  The vehicle-side heat exchanger 121 of the vehicle-mounted connector 65 has the same shape as the vehicle-side chiller 46 of the first embodiment. For example, the vehicle exterior heat exchanger 121 has a plurality of fins extending along the center line of the vehicle exterior heat exchanger 121. These fins alternately overlap with the cooling fins 93b of the chiller cooling section 93 in a state where the vehicle-mounted connector 65 and the equipment connector 100 are connected to each other. In addition, a refrigerant passage through which the refrigerant of the on-board refrigeration circuit 21 flows is formed in the vehicle-side heat exchanger 121. The refrigerant passage has a fin passage formed in the fin.

  The vehicle-mounted connector 65 of the present embodiment is provided at a position near the front end of the vehicle body 61. Specifically, it is provided at a position near the air conditioning unit 40 and the condenser 32 in a region of the vehicle 60 in front of the vehicle compartment. For this reason, there is no need to route the pipe connecting the condenser 32 and the heat exchanger 121 to a far position. In the present embodiment, the charging inlet is provided at a position near the front end of the vehicle body 61 and near the vehicle-mounted connector 65. Therefore, when the user charges the vehicle 60, the work load for the work of attaching the power supply plug to the inlet and the work of connecting the facility connector 100 to the on-board connector 65 can be reduced.

  According to the present embodiment, the vehicle-side heat exchanger 121 of the vehicle-mounted connector 65 is included in the refrigeration vehicle-mounted circuit 21. In this configuration, the chiller cooling unit 93 of the cooling facility 70 cools the vehicle-side heat exchanger 121, so that the refrigerant in the on-board refrigeration circuit 21 is cooled by the vehicle-side heat exchanger 121. Therefore, the cooling capacity of the cooling facility 70 can be used not only for cooling the battery cells 11 but also for cooling the vehicle compartment by the vehicle compartment circuit 22.

(Other embodiments)
The disclosure of this specification is not limited to the illustrated embodiments. The disclosure embraces the illustrated embodiments and variations thereon based on those skilled in the art. For example, the disclosure is not limited to the combination of the components and elements shown in the embodiment, and can be implemented with various modifications. The disclosure can be implemented in various combinations. The disclosure may have additional parts that can be added to the embodiments. The disclosure includes those in which the components and elements of the embodiments are omitted. The disclosure encompasses the replacement or combination of parts, elements between one embodiment and another embodiment. The disclosed technical scope is not limited to the description of the embodiments. The technical scope disclosed is shown by the description of the claims, and should be construed to include all modifications within the meaning and scope equivalent to the description of the claims.

  As a first modification, the in-vehicle connector 65 and the facility connector 100 may be connected to each other in only one position, or may be three or more positions. When the predetermined angle at which one of the in-vehicle connector 65 and the equipment connector 100 is rotated relative to the other is set to 90 degrees, there are four postures that can be connected to the other.

  Further, when one is rotated about the center line with respect to the other, the on-board connector 65 and the equipment connector 100 may be connectable for all rotation angles. For example, each chiller fin 46b of the vehicle-mounted connector 65 and each cooling fin 93b of the equipment connector 100 are configured to extend in a ring shape around the center lines CL1 and CL2. According to this configuration, if the in-vehicle connector 65 and the facility connector 100 are in a state where their center lines CL1 and CL2 are coincident with each other, assuming that the center lines CL1 and CL2 extend horizontally, the connectors 65 and 100 can be connected regardless of the up, down, left and right directions.

  As a second modification, one of the outer chiller 46 of the vehicle-mounted connector 65 and the chiller cooling portion 93 of the equipment connector 100 may be configured to be deformed according to the other shape. For example, the chiller cooling unit 93 has a plurality of cooling fins 93b, and the vehicle exterior chiller 46 is formed of a material that is deformable according to the shape of the chiller cooling unit 93 and has thermal conductivity. According to this configuration, even if only one of the outer chiller 46 and the chiller cooling unit 93 has a plurality of fins, the outer chiller 46 and the chiller cooling unit 93 are connected in a heat exchangeable state. be able to.

  As a third modification, the water passage 68 of the vehicle-side chiller 46 may not have the fin passage portion 68b as long as the water passage 68 has the main body passage portion 68a. Similarly, the water passage 103 of the chiller cooling section 93 may not have the fin passage 103b as long as it has the main body passage 103a. In addition, the vehicle-side chiller 46 need not have the chiller fin 46b as long as it has the chiller body 46a. Similarly, the chiller cooling section 93 may not have the cooling fins 93b as long as it has the cooling main body 93a.

  As a fourth modification, the vehicle 60 may be equipped with a cooling cable 106 extending from the on-board connector 65. In this configuration, when the user cools the battery cells 11 of the vehicle 60 with the cooling facility 70, the cooling cable 106 can be extended to move the on-board connector 65 to the position of the cooling facility 70 and connect to the facility connector 100. . In this case, it is possible to shift the vehicle-mounted connector 65 between the first posture and the second posture inverted around the center line CL1, and the vehicle-mounted connector 65 is in either the first posture or the second posture. Also, the on-board connector 65 and the facility connector 100 can be connected.

  As a fifth modification, the cooling cable 106 may be provided integrally with the power supply cable. Further, the equipment connector 100 and the power supply plug may be integrally provided as one connector, and the vehicle-mounted connector 65 and the inlet may be integrally provided as one receiver. In this case, by attaching one connector portion to one receiving portion, the operation of connecting the equipment connector 100 to the vehicle-mounted connector 65 and the operation of connecting the power supply plug to the inlet portion can be performed together.

  As a sixth modification, a plurality of on-vehicle heat exchange units of the on-vehicle connector 65 may be provided in the on-vehicle cooling system 20. For example, both the vehicle-side chiller 46 of the first embodiment and the vehicle-side heat exchanger 121 of the second embodiment may be included in the vehicle-mounted connector 65 as a vehicle-mounted heat exchange unit. In this configuration, in the equipment connector 100, both the vehicle-side chiller 46 and the vehicle-side heat exchanger 121 can be cooled by the equipment heat exchange unit such as the chiller cooling unit 93.

  As a seventh modification, in the vehicle-mounted cooling system 20, the cooling water cooled by the vehicle-side chiller 46 does not cool the battery cells 11 via the battery cooling unit 48, but cools the battery cells 11. May be generated by the outer chiller 46. For example, the outside chiller 46 generates cooling air by cooling the surrounding air, and a blowing unit installed in the pack case 12 sends the cooling air to the battery cells 11.

  As a modification 8, in the vehicle-mounted cooling system 20, the vehicle-side chiller 46 as the vehicle-mounted heat exchange unit may cool the battery cooling unit 48 and the battery cells 11 without using a coolant such as cooling water. For example, it is assumed that the vehicle exterior chiller 46 and the battery cooling unit 48 are connected by a cooling member having high thermal conductivity. With this configuration, when the chiller cooling unit 93 cools the vehicle-side chiller 46, the chiller cooling unit 93 cools the battery cooling unit 48 via the cooling member.

  As a ninth modification, the equipment heat exchange unit such as the chiller cooling unit 93 may be included in the refrigeration equipment circuit 72 instead of the water cooling equipment circuit 73 in the cooling equipment 70. For example, the equipment heat exchanger 85 of the refrigeration equipment circuit 72 may configure the equipment connector 100 as an equipment heat exchange unit. In this case, the refrigerant of the refrigeration cycle flows through the equipment heat exchange unit instead of the cooling water. The equipment cooling system 71 may not have the water cooling equipment circuit 73 as long as the equipment cooling system 71 has the refrigeration equipment circuit 72.

  As a tenth modification, the equipment cooling system 71 that cools the equipment heat exchange unit such as the chiller cooling unit 93 in the cooling equipment 70 may not have a refrigeration cycle as long as the equipment heat exchange unit can be cooled.

  As a modification 11, the charging facility 110 may be provided separately from the cooling facility 70. For example, the power supply unit of the charging facility 110 is housed in a charging case, and the charging case is installed on the parking surface G independently of the cooling case 105.

  As a twelfth modification, the ECU 64 may make a cooling determination as to whether or not the vehicle-mounted heat exchange unit such as the vehicle-side chiller 46 is cooled by the cooling equipment 70. For example, when the in-vehicle cooling process includes a process of performing a cooling determination, and the in-vehicle heat exchange unit is not cooled by the cooling facility 70, the normal circulation mode is set in step S202, and the cooling is performed. If so, the charging circulation mode is set in step S203. As described above, when the external cooling in which the battery cells 11 are cooled via the on-vehicle heat exchange unit is performed, the flow rate of the cooling water cooled by the inboard chiller 45 and the outboard chiller 46 in the water-cooled on-board circuit 25 is reduced. When the cooling water increases, it becomes easier to cool the cooling water. As the cooling water flow rate increases, the amount of heat exchange between the pack heat exchanger 35b and the vehicle interior chiller 45 and the amount of heat exchange between the chiller cooling unit 93 and the vehicle outside chiller 46 increase. As a result, the battery cells 11 are easily cooled, and a high battery cooling capacity can be obtained.

  As a thirteenth modification, the functions realized by the controller 75 and the ECU 64 may be realized by hardware and software, or a combination thereof. The controller 75 and the ECU 64 may communicate with, for example, another control device, for example, another control device mounted on a vehicle, and the other control device may execute part or all of the processing. When realized by an electronic circuit, the controller 75 and the ECU 64 can be realized by a digital circuit including a large number of logic circuits or an analog circuit.

  As a modified example 14, in the on-vehicle cooling system 20, the cabin circuit 22 and the pack circuit 23 may be connected in series to the common circuit 24.

  As a modification 15, the vehicle 60 is an electric vehicle having a motor driven by the electric power charged in the battery cell 11 as a driving source for driving, or a fuel cell vehicle having a fuel cell as a power supply source for the driving motor. You may.

  11: Battery, 20: Onboard cooling system as onboard cooling device, 21: Refrigeration onboard circuit as second onboard circuit, 25: Water cooling onboard circuit as first onboard circuit, 46: Onboard heat exchange unit and first heat exchange A chiller fin as an extension portion and a first extension portion; 47, a vehicle-mounted pump; 60, a vehicle; 64, an ECU as a vehicle-mounted control unit; 65, a vehicle-mounted connector as a first connector; 68b: fin passage portion as a passage portion and a first passage portion; 70, a cooling facility as an external facility; 72, a refrigeration facility circuit as a second facility circuit; 73, a water cooling facility circuit as a first facility circuit; A controller as an equipment control unit; 92, an equipment pump; 93, a chiller cooling unit as an equipment heat exchange unit and a second heat exchange unit; 93b, a cooling fin as an extension unit and a second extension unit; 5: cooling system, 100: equipment connector as a second connector, 103b: fin passage as a passage and a second passage, 121: an outside heat exchanger as a vehicle heat exchange unit and a first heat exchange unit, CL1: a center line as a vehicle center line, CL2: a center line as a facility center line, S104: a second facility setting unit, S106: a first facility setting unit, S202: a first vehicle setting unit, S203: a second vehicle setting Department.

Claims (20)

A cooling system (70) for cooling a battery via a vehicle-mounted heat exchange unit for a vehicle (60) equipped with a battery (11) and a vehicle-mounted heat exchange unit (46, 121) for cooling the battery. ,
An equipment connector (100) having the on-vehicle heat exchange unit and detachably connected to an on-vehicle connector (65) mounted on the vehicle;
The equipment connector,
A cooling facility, comprising: a facility heat exchange section (93) for cooling the onboard heat exchange section by heat exchange with the onboard heat exchange section in a state where the facility connector and the onboard connector are connected to each other.   The cooling facility according to claim 1, further comprising a facility pump (92) that sends a refrigerant for cooling the facility heat exchange section to the facility heat exchange section.   The cooling facility according to claim 2, wherein the facility pump sends water as the refrigerant to the facility heat exchange unit.   The cooling facility according to claim 2 or 3, further comprising a facility control unit (75) for controlling an operation state of the facility pump. The equipment control unit,
A first equipment setting unit (S106) for setting a supply amount of the refrigerant to the equipment heat exchange unit to a first equipment value when the battery is being charged in a first charging mode;
When the battery is being charged in a second charging mode in which the amount of heat generated by the battery due to charging is larger than in the first charging mode, the supply amount of the refrigerant to the equipment heat exchange unit is increased by the second A second equipment setting unit (S104) for setting a second equipment value larger than one equipment value;
The cooling facility according to claim 4, comprising: A first equipment circuit (73) having the equipment heat exchange unit and circulating a first equipment refrigerant for cooling the equipment heat exchange unit by heat exchange with the equipment heat exchange unit;
A second equipment circuit (72) that circulates a second equipment refrigerant that is a refrigerant of a refrigeration cycle and cools the first equipment refrigerant by heat exchange with the first equipment refrigerant;
The cooling facility according to any one of claims 1 to 5, further comprising:   The equipment connector includes a first attitude in which an equipment center line (CL2), which is a center line of the equipment connector, is parallel to a center line (CL1) of the in-vehicle connector, as a relative attitude with respect to the on-vehicle connector; The cooling facility according to any one of claims 1 to 6, wherein the cooling facility can be connected to the on-vehicle connector in both a second posture obtained by rotating the facility center line by a predetermined angle with respect to the posture with respect to the posture. The equipment heat exchange section,
It has a plurality of extensions (93b) extending along the center line (CL2) of the equipment connector, and the equipment connector and the on-vehicle connector are connected to each other via the extension while being connected to each other. The cooling facility according to any one of claims 1 to 7, which performs heat exchange with the on-vehicle heat exchange unit.   The cooling facility according to claim 8, wherein a passage section (103b) through which a refrigerant for cooling the facility heat exchange section flows is provided inside the extension section. An in-vehicle cooling device (20) mounted on a vehicle (60) together with a battery (11) to cool the battery,
An in-vehicle connector (65) detachably connected to an equipment connector (100) of a predetermined external equipment (70);
With
The vehicle-mounted connector,
In a state where the vehicle-mounted connector and the equipment connector are connected to each other, the vehicle-mounted heat exchange part (46, 121) is cooled by heat exchange with the equipment heat exchange part (93) of the equipment connector to cool the battery. , A vehicle-mounted cooling device having the same.   The on-vehicle cooling device according to claim 10, further comprising an on-vehicle pump (47) that sends a refrigerant for cooling the on-vehicle heat exchange unit to the on-vehicle heat exchange unit.   The vehicle-mounted cooling device according to claim 11, wherein the vehicle-mounted pump sends water as the refrigerant to the vehicle-mounted heat exchange unit.   The on-board cooling device according to claim 11 or 12, further comprising an on-board control unit (64) for controlling an operation state of the on-board pump. The in-vehicle controller,
A first in-vehicle setting unit (S202) for setting the supply amount of the refrigerant to the in-vehicle heat exchange unit to a first in-vehicle value when the battery is not charged;
A second in-vehicle setting unit (S203) for setting the supply amount of the refrigerant to the in-vehicle heat exchange unit to a second in-vehicle value larger than the first in-vehicle value when the battery is being charged;
The in-vehicle cooling device according to claim 13, comprising: A first vehicle-mounted circuit having the vehicle-mounted heat exchange unit and circulating a first vehicle-mounted refrigerant cooled by heat exchange with the vehicle-mounted heat exchange unit;
A second vehicle-mounted circuit that circulates a second vehicle-mounted refrigerant that is a refrigerant of a refrigeration cycle and cools the first vehicle-mounted refrigerant by heat exchange with the first vehicle-mounted refrigerant;
The vehicle-mounted cooling device according to any one of claims 10 to 14, comprising: A first vehicle-mounted circuit (25) for circulating the first vehicle-mounted refrigerant as a refrigerant,
The refrigerant having the on-vehicle heat exchanging unit, which is cooled by heat exchange with the on-vehicle heat exchanging unit and cools the first on-vehicle refrigerant by heat exchange with the first on-vehicle refrigerant. A second vehicle-mounted circuit (21) for circulating a certain second vehicle-mounted refrigerant,
The vehicle-mounted cooling device according to any one of claims 10 to 14, comprising:   The vehicle-mounted connector may include, as relative postures with respect to the equipment connector, a first posture in which a vehicle-mounted center line (CL1), which is a center line of the vehicle-mounted connector, is parallel to a center line (CL2) of the equipment connector; The on-vehicle cooling device according to any one of claims 10 to 16, wherein the on-vehicle cooling device according to any one of claims 10 to 16, wherein the on-vehicle cooling device can be connected to the equipment connector in both a second posture obtained by rotating the vehicle center line by a predetermined angle with respect to the posture. . The in-vehicle heat exchange unit,
The vehicle connector has a plurality of extending portions (46b) extending along a center line of the vehicle-mounted connector, and the equipment heat is transmitted through the extending portion in a state where the vehicle-mounted connector and the equipment connector are connected to each other. The on-vehicle cooling device according to any one of claims 10 to 17, which performs heat exchange with an exchange unit.   The vehicle-mounted cooling device according to claim 18, wherein a passage portion (68b) through which a refrigerant for cooling the vehicle-mounted heat exchange unit flows is provided inside the extension portion. A cooling system (95) for cooling a battery (11) mounted on a vehicle (60),
A first connector (65) mounted on the vehicle;
A second connector (100) provided on a predetermined external facility (70) and detachably connected to the first connector;
With
The first connector includes:
A first heat exchange section (46, 121) for cooling the battery;
The second connector includes:
A second heat exchange unit (93) for cooling the first heat exchange unit by heat exchange with the first heat exchange unit in a state where the first connector and the second connector are connected to each other; There is a cooling system.

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